Abstract
Heat capacity measurements under magnetic fields are carried out on one-dimensional Heisenberg antiferromagnets, a spin-Peierls (SP) and Haldane gap system. In the SP system CuGeO3, the jump in the heat capacity corresponding to SP transition is observed under fields up to 13 T. The obtained field-temperature phase diagram is in good agreement with the previous results of magnetic measurements. The heat capacity follows the exponential temperature dependence at low temperatures under zero field, while it approaches T3-dependence under external field. The heat capacity of Haldane gap system NINO is almost the same as that of NENP. The energy gap at and above Hc is caused by the existence of the transverse moment.
| Original language | English |
|---|---|
| Pages (from-to) | 205-207 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 211 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - May 1 1995 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Heat capacities of one-dimensional Heisenberg antiferromagnets under high magnetic fields. / Kobayashi, Tatsuo; Koda, A.; Honda, H.; Hong, C. U.; Amaya, K.; Asano, T.; Ajiro, Y.; Mekata, M.; Yosida, T.
In: Physica B: Condensed Matter, Vol. 211, No. 1-4, 01.05.1995, p. 205-207.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat capacities of one-dimensional Heisenberg antiferromagnets under high magnetic fields
AU - Kobayashi, Tatsuo
AU - Koda, A.
AU - Honda, H.
AU - Hong, C. U.
AU - Amaya, K.
AU - Asano, T.
AU - Ajiro, Y.
AU - Mekata, M.
AU - Yosida, T.
PY - 1995/5/1
Y1 - 1995/5/1
N2 - Heat capacity measurements under magnetic fields are carried out on one-dimensional Heisenberg antiferromagnets, a spin-Peierls (SP) and Haldane gap system. In the SP system CuGeO3, the jump in the heat capacity corresponding to SP transition is observed under fields up to 13 T. The obtained field-temperature phase diagram is in good agreement with the previous results of magnetic measurements. The heat capacity follows the exponential temperature dependence at low temperatures under zero field, while it approaches T3-dependence under external field. The heat capacity of Haldane gap system NINO is almost the same as that of NENP. The energy gap at and above Hc is caused by the existence of the transverse moment.
AB - Heat capacity measurements under magnetic fields are carried out on one-dimensional Heisenberg antiferromagnets, a spin-Peierls (SP) and Haldane gap system. In the SP system CuGeO3, the jump in the heat capacity corresponding to SP transition is observed under fields up to 13 T. The obtained field-temperature phase diagram is in good agreement with the previous results of magnetic measurements. The heat capacity follows the exponential temperature dependence at low temperatures under zero field, while it approaches T3-dependence under external field. The heat capacity of Haldane gap system NINO is almost the same as that of NENP. The energy gap at and above Hc is caused by the existence of the transverse moment.
UR - http://www.scopus.com/inward/record.url?scp=0344357910&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0344357910&partnerID=8YFLogxK
U2 - 10.1016/0921-4526(94)00986-6
DO - 10.1016/0921-4526(94)00986-6
M3 - Article
AN - SCOPUS:0344357910
VL - 211
SP - 205
EP - 207
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1-4
ER -